A life-size human torso with interchangeable male and female genital organs with embryo in third month of pregnancy. Dissectible into 24 parts: head, half brain with arteries, eye with optic nerve, female breast cover, two lung halves, heart (two parts), stomach (two parts), liver with gallbladder, large intestine with appendix flap (three parts), small intestine, kidney half, female genital organs (two parts) with third month embryo, male genital organs (four parts), and torso. Unbreakable plastic. 15 in. x 10 in. x 34 in. mounted on base. Torso teaching guide included.